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  • FAQ

Remanufactured ISC/ISL 8.3/8.9L Cummins Holset HE300VG Turbo Actuator

  • Cummins ISC/ISL 8.3 - 8.9L HE300VG Turbo Actuator with Calibrator and Installation Kit
  • Remanufactured Cummins 8.3 - 8.9L HE300VG Holset Turbo Actuator Replacement
  • Remanufactured ISC/ISL Cummins 8.3 - 8.9L HE300VG Holset Turbo Actuator
  • Holset HE300VG Turbo Actuator Bottom
  • Cummins HE300VG Holset Turbo Actuator Side
  • HE300VG Turbo Actuator Calibrator Tool
  • Cummins 8.3 - 8.9L HE300VG Install Kit Included
1-business day turnaround service


  1. Instructional Information
  2. Part Numbers
  3. Warranty
  4. Reviews

Product Description

Does your 8.3/8.9L Cummins Engine have a failed Holset Turbo Actuator? If so, we offer a remanufactured option for the Holset HE300VG Turbo Actuator that includes the installation kit and gaskets for 8.3/8.9 Liter ISC/ISL Cummins Engines. Our Actuator Exchange option ships the same day, Monday through Friday. 

Optional Calibrator Tool Rental

The actuator will require calibration to complete the re-installation. Calibration can be preformed with any standard, capable tool including Cummins INSITE, Holset E-Tool, and various Snap-On, Matco, and Autel tools. We can include an optional calibration tool in the shipment of your actuator for an additional rental fee of $100. This calibration tool allows you to accomplish the entire installation process without a trip to the dealer or mechanic. Additionally, unlike other calibration procedures, our calibration tool will not require any changes to your custom tune. 

Note: There will be an additional charge of $500 if the calibration tool is NOT returned to us within 15 calendar days of the receipt of this product.

Benefits of our Actuators

  • Fully remanufactured mechanically and electronically
  • All ball bearings are replaced with OEM bearings
  • All bushings are replaced
  • All work is performed in-house at our facility in Greenville, SC
  • Our No-hassle 1-Year warranty covers the entire actuator
  • 5-star customer service


  1. The purchase of this replacement turbo actuator requires your original "core" be shipped to Circuit Board Medics after you receive the module. We do not require an up front core deposit, but a core charge must be captured if a rebuildable turbo actuator is not returned to Circuit Board Medics. If your core is not received within 15 calendar days, an additional core charge of $500 will be charged to your credit card.
  2. Your original turbo actuator must meet the following qualifications:
    • No prior repair attempts
    • No fire damage
    • No damage to the housing
    • Must be a genuine Holset actuator

Start the process today by clicking the "Place Your Order" button above and proceed through the checkout process. 

If you have questions about this exchange service, please text or call 800-547-2049.

Removal Instructions


Part Numbers

Below is a list of known actuator part numbers for the HE300VG Turbo Actuator. This is NOT a complete list so if you do not see your part number listed please call us at 800-547-2049.

3778617 3778618 3778620 3778621 3778622 3778624 3778626 3778628 3784298 3784385 3785178 3785179 3785181 3785183 3785185 3788933
3788934 3788935 3790798 3790800 3792889 3792890 4034088 4034174 4034188 4034307 4034308 4034310 4034392 4034393 4034396 4034397
4034398 4034429 5326300 5352001 5353302 5355124 5355724 5356521 5356525 5359273 5359274 5359275 5359276 5359278 5452653 5452654
5452690 5452695 5452755 5458935 5458938 5458939 5458940 5458941 5458942 5458944 5458945 5458946 5458947 5458948 5458950 5496045
5496046 5496047 5501181 5501185 5601521 5604272 5641687 5641688 5641690 5641691 5641693 5641694 4034088NX 4034174NX


Our no-hassle warranty covers your repair for a full year. If the repair fails anytime within a year, we will repair the item again. In the rare occasion that the item is not repairable, we will either replace the circuit board entirely or refund the cost of the repair, at our discretion. See Details...

Product Reviews